High-profile gun violence has historically renewed legislative interest in the cause of gun control, and the shootings of twenty people in Tucson, Arizona is no exception — only this time, the measures face steeper hurdles than before....

Democrats in the House and Senate are preparing to introduce gun control legislation that would restrict high-capacity ammunition clips like the one used Saturday in the tragic shootings of 20 people in Arizona. Sen. Frank Lautenberg (D-NJ) and...